Chemistry of Bis (pi-7,8-dicarbollyl) metallates. The Reaction Between ((pi-7,8-B9C2H11)2Co) and Aryl Diazonium Salts

摘要

The thermal decomposition of (ArN2)((pi-7,8-B9C2H11)2Co), Ar = C6H5 of C6H4CH3; in aromatic solvents has been investigated and the new complexes ((CH3)4N)((pi-7,8-B9C2H10)2C6H4Co) and ((CH3)4N)((pi-7,8-B9C2H10)2C6H3CH3Co) isolated. The aryl group is thought to occupy a bridging position between two B9C2H10 moieties in each complex and is shown to be derived from the solvent which constitutes the reaction medium. A possible mechanism for the formation of these compounds is discussed and evidence for the presence of radical intermediates during the reaction is presented. (Author)